# Relationship history for MSHA mine 3002030

Current hierarchy: **Jon  Vespa → John Vespa Sand & Gravel → Felts Mills Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** John Vespa Sand & Gravel → Felts Mills Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jon  Vespa → Felts Mills Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Vespa → John Vespa Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history